Primer for internal-combustion motors.



G. W. BROWN PRIMER PORNTERNALGOMUSTIQN MOTORS.

APPLICATION FILED SEPT. 18, 1912. y

Patented Ju1y22, 1913.,

GILMAN VJ. BRC'VVN. UF "WEST N21i/NEUE Y. 'i

TQ HARRET L. M'ADDOCK, U1 HAVE? I HORACE W. LEROY/VN, OF WEST NVJBU@ PRIMER FOR IN TERNAL-COM1SUSION MOTRS.

i ,cuasi o;

Application filed September 18, 1912.

To a7( far/wm may concern Be it known that I, GILMAN W. BROWN, a citizen of the United States, and resident of `W est Newbury, in the county of Essex and State of Massachusetts, have invented certain new and useful Improvements in Primers for internal-Combustion Motors, of which the following is a specification.

The present invention relates to a device or apparatus adapted to be applied in connection with any internal combustion motor using liquid hydrocarbon as fuel, and particularly in connect-ion with the motors of automobile vehicles, for so priming the motor that it may be readily started when cold.

The object of the invention is to produce a priming device of such character that it can be located in any position, near to or remote from the motor, and above or below the intake of the motor, and will be equally effective whatever its location.

The invention consists essentially in the ,combination with a tank for a. special volatile liquid fuel, of a means for mixing fuel issuing from such tank with air, and with means for making'the device operative or inoperative at will, all combined in a com- .pact unitary structure capable of being mounted in any convenient location on the frame of a motor or of the vehicle equipped with the motor, and having a conduit for leading the mixture to the intake of the motor, as hereinafter more fully and specifically explained.

41n the accompanying drawings, Figure 1 represents the preferred embodiment of my invention in longitudinal section shown as applied to an automobile vehicle. li" ig. 2 is an end elevation of the same as viewed from the line 2-2 of Fig. 1 looking in the direction of the arrow. Fig. 3 is an enlarged sectional view of the means for mixing the fuel with air. Fig. 4 is a side elevation showing the priming device and the motor of an automobile, illustrating one mode of appli cation of the device.

The same reference characters indicate the samefparts in all the figures.

The construction of the device consists preferably of a base or head l() having a cylindrical wall 11 )nojeeting from one side, constituting one end of a 'tank or reservoir for the liquid fuel and having a rim 12 on.

Speciication of Letters luttent.l

limit-rut ed July Serial No,- 720,964.

the other side of the head from the wall 11, inclosing a space which contains an operatlng lever 123, hereinafter particularly described. t suitable points aty the exterior of the rinl 12 are perforated ears 14 for the reception of screws or other fastenings used in attaching the device to a support. At one side of the head there is a tubular portion 15 forming a mixing chamber and a guide for a valve, hereinafter described, and terminating in an end wall or head 1G. The tubular portion 15 will be hereinafter described as a mixing chamber.

Projecting from the wall 1G `into the mixing chaniber approximately in the axis thereof is 'a fuel nozzle 17 having a bore which connects with a passage 18 in the wall or head 16 leading from the space inclosed y of the bore. A packing gland 21 containing' packing surrounds the needle valve and is screwed upon the nipple 20.

l* rom the side of the mixing chamber extends an externally threaded nozzle or nipple 22 having a passage which. communicates with the interior of the chamber. Between the nipple 22 and the end wall 16 is a slot 23, or its equivalent, a series of holes, in the side wall of the mixing chamber.

(ln the opposite side of the head from the parte last described' is a guideway 241- open at one end and having an abutment shoulder 25 at the other end in which is contained a plunger 2,6 for operating the lever 13. laid lever is pivoted between ears 27 on the head 1t? and has one of its ends projecting 'into a transverse slot or notch 28 in the plnngert. The head 10 with the walls 11 and 12. the guidesl 1 5 and 211 and the wall 16, fuel nozzle 17 and nipples 20 and 22 are all preferably made as one single metal castft cup 29 conveniently made of sheet .metal sweated or otherwise secured at its pen end within the end of the circular wall 11 and forms together with said wall and the head 10, an inclosed tanl or reservoir for liquid fuel. "The device is so mounted onits support, as shown in Fig. 1,'that when in place the'passage 18 is at the lowest point of the tank, whereby a gravity flow of the liquid through the fuel nozzle 17 may occur whenever such nozzle is open, as long` as any liquid remains in the tank. l

in the mixing chamber there is mounted a plug valve BO which has a sliding fit within thewalls of said chamber and has a. range 'of movement sufficient to cover and uncover the bore of the nipple Q2. rThis plug' valve is longitudinally bored and contains a fuel valve 3l, a spring 32, and an Ialnitnient plug 3 3.` The fuel valve has a head making a sliding' i'it in such bore and a portion. smaller than the head projecting through a restricted aperture in the end of the plug valve in line with the ,fuel nozzle. The prois the fuel valve Aproper and is taperedl so as to have an exact bearingonvr a ilaring'sur- Aface er 'valve seat formed at the end of the fuel nozzle, as shown clearly in Fig. 3. The spring 32 reactson the abutment 33, which is tightly lixed in the valve 30 and presses against the fuel valve 3l, tending to hold the latter yieldingly against the seat when the plug valve is in the closed position represented in the drawings.

-The part-s thus particularly described, los cated beneath the fuel tank const-itute a carbureter for producing a combustible mixture of, vaporizedliquidfuel and air, of which lthe nozzle 17 is the fuel inlet, the opening 2e theI an inlet, thespace inelosed 'within the part 15 is the mixing chamber, the nipple 22 is the outlet forthe combustible mixture, the plug 30 is an air valve permitting or' preventing ini'iow of air vto the carbureter and utiiow iof the mixture therefrom, and t-he valve 3l is the -fuel valve ladmitting 4or cutting off the supply of fuel to the mixing chamber. A ring 34 is tightly fitted in the mixing chamber surrounding the outletendof tle fuel nozzle and located between the ai? inlet and mixture outlet of they carbureter. vThe interior of this ring is larger than the nozzle, `whereby an an- 45 nula-r space entirely surrounding the nozzle is provided, but the ring'produces a constriction in the 'air' tube adjacent to the out- A let of the nozzle, vwhereby the air passing through the carburetor is caused to' travel with great velocityimmediately adjacentto the nozzle outlet. The suction of theistream of air flowing through this constriction drawsthe liquid fuel through the nozzle 17 at a rate proportional to the rate at which the. air moves, which alsois proportional to the suction` of, the motor and the volume of air drawn` into the motor. Thus, by reason of theaconstriction the proportions yof the combustible -mixture produced in the 60,carbureter`ai'eautomatically caused to be proper for eicient combustion under all conditions of'dut Moreair owing ata higher speed ,un er heavier suction draws from the nozzle more fuel than'does a less quantity of air owing yat a slower speed jecting' end portion of the valve member 3l,

passes through such eye and the adjacentparts of the plug valve, connecting the lever and valve pivotally together. The valves of the carbureter` are thus connected through the lever 13 with the plunger 26, previously described, so thatmovement of said plunger in one direction'or the other causes opening `or closing of the valves. A spring 36 is contained'iin the plunger guide ifi, preferably as shown in F ig. l, and tends to close the valves 30 and 3l.

When the priming device is vmounted as vshown in these drawings, it is secured to the dash 237 of themotor vehicle, on the forward side of the dash and beneath the hood covering fthe motor, the plunger 2G passing through the 'dash in a position where it can be engaged 'by the hand or foot of thev driver.- A pipe 38 is connected with the outlet nipple 22 and e leads to any convenient point on the intake B9 of the motor, with'the interior of which it makes communication. Thus when the plunger 26 isfmoved outwardly? thev fuel and mixture is nolonger produced and con-` ducted to themotor.

This priming device is independent of' the main carbureter ofthe motor and `is only used in starting the motor when the "that even in extremely cold weather a mixture will be produced which can be readily ignited. Whenthe motor has been started, the priming device is shut olf and the conthe mixture supplied through the main carbureter. v

I'f it is not practicable to place the pri1n- Ving device in the position shown in the drawing, it may be 'placed anywhere.,

whether near orI remote from the motor or -tinued running of the motor iselfected by above or below 'the point of connection of the intake, in fact in any position ,from

which a pipe maybe led to the motor in;`

take.d This is made possible by the fact that the combustible mixture is produced Y.

titi

et the point Where the supp-ly tank is located, vandfthat the substance cmid-uoted` to the motor is a :gaseous mixture of 'the proper proportions to produce lan explosion kwhen met. ducted to a level above that hof the tank as wel] as below it and through a pipe of what: ever length and however' bent, and the irelation between the mixingchmmber `and the supplj7 tank is never changed, however-the location of the device altered, but the carb'ureter yis always. in

'close proximity to the tank and beneath the same so that flow of fuel to the carbureter` is assured as long as a drop remains in the tank. As there is no long communication between the tank and the point of vaporization there is no danger of feeding gas instead of liquid to the mixing point.

` Mechanically the device is compact and of simple construction, not liable to derangement and capable of being manufactured at slight cost. A connection with the plunger 26 is made through a cord 40 or the like which may be conducted away so that the primer may be operated from a distant point, for instance, at the point Where the driver stands in cranking the, motor by hand. l

ll claim:

i. A primingl device for internal combus tion motors comprising a fuel tank, a mixing chamber formed as a part of the structure of said tank and located beneath the latter, a nozzle extending into said charnber and in communication with the tank, an air valve for controlling the. flow of air through the mixing chamber, a. fuel valve carried by said air valve and yieldingly actuated to seat against the nozzle outlet when the airpfalve is closed and actuatlng means mount/ed on the" tank structue for opening said avalves.

2. A priming device comprising a tank,` a

carburetor beneath the tank and formed in unitary structure therewith, said carburetor includiinen a nozzle in communication With the interior of the tank, a compound valve .in the carburetor tor permitting and preve ting iloiv of air` through ytlic same and emission ot' fuel from the nozzle, a lever pivoted to the tank structure and connected with said valve, and an actuator mounted on the tank structure and operable to open and close said compound valve.

ik priming device for internal combustion motors comprising a tank, a carburetor located at the bottom of the tank and having' a nozzle communicating with the interior of the tank, a valve movable inl line with said nozzle and arranged to seat in the orifice thereof, Vand an actuniti/ngir member mounted upon the tank and connected With said valve for openingI and. closing" the saine.

ft. it priming device for internal combus- Such gaseous lmixture can @he con-` as a Whole may be `valve,

tank, said casting havinga a tabula-r portion on its under side forming" the mixing cham ber of a carburetor provided with an outlet, ,an 4end Wall and a vnozzle in communication with the interior of said tubular portion pi-ojectingA into such portion, a valve #having a sliding tit in said tubularportion and movable to cover and uncover the. ,outlet therefrom, a lever piv ated-to thecasting and connected with said a guide formed as a part of said casting and a plunger contained movahly in said guide and engaged with said lever for moving the latter to open and close" said valve. f

5. A pri-ming?J device for internal combustion motors, consisting of a tank or reservoir, a tubular member connected with said tank formed with an end wall and a nozzle extending` from such end Wall into the interior of such member, said member havingl an air inlet opening in i-tsside adjacent to the end Wall and having an outlet ata point more remote from said Wall, the nozzle and end Wall having a continuous passage leading into the tank, an air valve iitting slidingly in said tubular member and movable across the outlet thereof, a fuel valve carried by said air valve and movable relatively thereto arranged to seat on the nozzle orifice, yielding means tending to seat said fuel valve, and means for opening and closingfthe valves.

6. A priming devicel comprising a'tank having an inclosed mixingr chamber in unitary connection with an outer wall, said mixing chamberhaving an inlet andl an outlet, and containing4 a fuel nozzle arranged with its discharge orifice intermediate said inlet and outlet fand in communication' with the interior of the tank, a valve contained in said. mixing chamber adapted to stop said nozzle, and means for operating said valve mounted upon said tank.

7, A priming device comprising a tank having an inclosed mixing chamber in unitary connection with an outer Wall, said mixing chamber having an inlet and 'an outlet and containing, 'a fuel nozzle 'arranged with its discharge orifice intermediate said inlet and outlet and in communication yWith the interior ofthe tank, a valve contained in said mixingr chamber adapted to stop said nozzle, a guidevvay oir-said tank, a plunger movable in said guidevvay and Va connecting member between Isaid plunger and said valve operable by said plunger to vitl) lll() izo move the valve into position forrespectively Y priming; device comprising a. tank mixing chamber having an inlet and an l intermediae wall ofi the teni; anni hai/ing outlet, andv containing a fuel nozzie ai its arms ./engage'd respectively Wth said ranged with its discharge -orifice intermef plungei and lsaid valve, whereby saidplundiete said inlet and outlet and in comniunif' ger may operaie said valve. l.

5 cation with the linterior of the iank, ae'ipilve f ln testimony whereof have' aiixel my 15 Contained in said ni-ixingeha1nber acliped l Signature,l in presence oi' Atwo Witneses. to stop said nozzle, a guideway formed on l Y l GILMAN BROWN.

" the'wall of the tank opposite to said mixing vWitnesses:

chamber, a. plunger movably mounted in BLANCHE B. KIMBALL,

1G said .guideway, and a lever pivoted on a'n HENRY M. BRIGGS.

Copies yof this patent may be obtained for ve cents each, by addressing the Commissioner of Patents, Washington, D. C. 

